Larval competition within and between insecticide resistant and susceptible individuals in the oriental fruit fly, Bactrocera dorsalis
Article first published online: 10 JUN 2012
© 2012 Blackwell Verlag, GmbH
Journal of Applied Entomology
Volume 137, Issue 4, pages 289–295, May 2013
How to Cite
Okuyama, T. and Hsu, J.-C. (2013), Larval competition within and between insecticide resistant and susceptible individuals in the oriental fruit fly, Bactrocera dorsalis. Journal of Applied Entomology, 137: 289–295. doi: 10.1111/j.1439-0418.2012.01739.x
- Issue published online: 8 APR 2013
- Article first published online: 10 JUN 2012
- Received: February 19, 2012; accepted: May 11, 2012.
- density dependence;
- insecticide resistance;
Insecticide resistance is a serious issue in agriculture. Ecological interactions may be used to manage the spread of resistance, but little information is currently available. In particular, virtually none is known about interactions between resistant and susceptible individuals. This study investigated competition between resistant and susceptible oriental fruit fly larvae (Bactrocera dorsalis). Competition in the larval stage was examined with an explicit consideration of individual identity (resistant or susceptible). Guava fruits were inoculated with eggs of susceptible and/or resistant flies, and their development and survival were monitored. Egg density influenced the time that larvae stayed in fruits as well as their survival. In addition, susceptible flies survived better when interacting with resistant flies than with other susceptible flies, indicating that susceptible flies are competitively superior to resistant flies. The results suggest that artificially creating environments that induce competition between susceptible and resistant flies can be useful for the management of insecticide resistance.